Sheet-piling.



PATENTED APR. 5, 1904.

L. P. FRIESTBDT.

SHEET FILING.

APPLICATION rum) SEPT. 2a. 1903.

N0 MODEL.

UNITED STATES Patented April 5, 1904.

LUTHER P. FRIESTEDT, OF CHICAGO, ILLINOIS.

SHEET-FILING.

SPECIFICATION forming part of Letters Patent No. 756,618, dated April 5, 1904.

Application filed September 26, 1903. Serial No. 174,748- (No model.)

To all whom it may concern:

Be it known that I, LUTHERP. Fnrns'rnnr, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Sheet-Piling, of which the following is a specification.

This invention relates to sheet-piling of the character and for the uses set forth in anumber of prior patents granted to me, and has for its object to provide a single-wall structure comprising beams of the same form assembled in continuous order.

In the drawings, Figure 1 is a plan of a single-wall structure embodying the improved features. Fig. 2 is an elevation of one of the beam-sections. Fig. 3 is an elevation of the next joining beam-section carrying the interlocking features. Fig. i is a plan of Fig. 2. Fig. 5 is a plan of Fig. 3, and Fig. 6 is amodification.

The structure is composed of metal beams all of the same rolled form, and presents a single wall at all points. In a practical application the I-beam form is used. The first section A is a plain I-beam, the next joining section B being a duplicate beam, having an interlocking means mounted thereon for loosely retaining the sections together in continuous order as they are assembled in the work. The beams are set so that the exterior surface of the cross-flange edges C abut and form a closefitting joint, as shown in Fig. 1. In locking the beam-sections together against lateral displacement each alternate section is provided with a number of angle clamping-irons D, which are arranged in pairs and located adjacent to the respective edges and on opposite sides. edge 7, the inclined part 8, thehorizontal part 9 and. the inward inclined free edge 10, and

all forming an integral structure. The degree.

of inclination of the free edge is the same as that of the inclined part, and both parts corresponding to and fitting the beveled surfaces of the inner adjacent sides of the beam-flanges C. The plate edge 7 lies flat on and extends The clamping-irons consist of a plate.

parallel with the web 11 of the beams B and is rigidly fastened thereto by a row of rivets 12, each row passing through and securing a pair of clamping-irons in place. In assembling the sections the flange edges of the A sections telescope endwise into the open recesses 13, formed by the overlapping free edges 10 of the locking clamp-irons D, and are loosely retained in this engaged position and may be easily withdrawn if the structure is of a temporary character, such as a coffer-dam and the like. The flanged joining faceedges of the respective beam-sections have a close frictional contact, making it unnecessary to use a packing substance When a tight joint is required.

Fig. 6 is a modification showing the substitution for the beam-section carrying the interlocking means of a plate or sheet 14, which alternates with the plain I-beam sections in building up a wall structure. In the use of this modification the weight is reduced and a saving made in the cost of production when this form of beam-section can be utilized.

By the arrangement shown and described it is possible to construct a continuous Wall of I-beam sections, which are found to be Well adapted for certain kinds of work.

Having thus described my invention, What I claim, and desire to secure by Letters Pat cut, is

1. In sheet-piling, a series of I-beam sections joined edgewise, the face sides of the cross-flange abutting, and means for locking all the sections together against displacement when assembled in a wall structure.

2. In sheet-piling, a wall structure composed of I-beams joined together edgewise, and angle clamping-irons rigidly mounted on alternate sections and overlapping the flanged edges of the joining sections.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LUTHER P. FRIESTEDT.

Witnesses:

RUDOLPH DOBRY, F. L. SHAFER. 

